The fate of the missing aristocrat sparked hundreds of theories about his fate, including that he was fed to tigers.

But, Scotland Yard cops have said the Etonian toff may still be alive – despite having been declared dead twice.

They said he still remains a suspect over the 1974 killing of Sandra Rivett and claim there is no “evidential or tangible proof” for his death.

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HAPPIER TIMES: Lord and Lady Lucan on their wedding day

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Scotland Yard told Mail Online: “Although there has not been any proof of life there has neither been any indication of evidential/ tangible proof of Lord Lucan’s death.

“There is statistically a very reasonable chance that he would still be alive.”

They argued war criminals from WW2 were still being brought to justice in their 90s as a reason to keep the case open.

The force added: “It has to be stressed that in order for Lord Lucan to get away as he did, it is very possible he would have received some help from other accomplices who may also still be alive and have information.”

If Lord Lucan is still alive he would be 83 years old.

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“There is statistically a very reasonable chance that he would still be alive”

Scotland Yard

He vanished on November 7, 1974, after an intruder his home in Belgravia, London, killed Mrs Rivett and attacked his estranged wife.

Lady Lucan went on to point the finger at Lord Lucan and an inquest later named him as the murderer.